11883781993 has 4 divisors (see below), whose sum is σ = 11962482688. Its totient is φ = 11805081300.

The previous prime is 11883781969. The next prime is 11883781997. The reversal of 11883781993 is 39918738811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11883781993 - 2¹⁷ = 11883650921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11883781997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39350121 + ... + 39350422.

It is an arithmetic number, because the mean of its divisors is an integer number (2990620672).

Almost surely, 2^11883781993 is an apocalyptic number.

It is an amenable number.

11883781993 is a deficient number, since it is larger than the sum of its proper divisors (78700695).

11883781993 is an equidigital number, since it uses as much as digits as its factorization.

11883781993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78700694.

The product of its digits is 2612736, while the sum is 58.

The spelling of 11883781993 in words is "eleven billion, eight hundred eighty-three million, seven hundred eighty-one thousand, nine hundred ninety-three".